Zinc doping of different nanoparticles of TiO2 Sachtopore for improved elimination of the methyl orange by photocatalysis

Regraguy, Boutaina; Ellouzi, Imane; Mabrouki, Jamal; Rahmani, Maryem; Drhimer, Fatine; Mahmou, Chaimaa; Dahchour, Abdelmalek; Mrabet, Mohammadine El; Hajjaji, Souad El

doi:10.1007/s42247-022-00403-w

Cited by 18 publications

(8 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wastewater that is contaminated with dyes from the textile, paper, pharmaceutical, and other industries is also discharged into the environment in large quantities [16]. Dyes have thus become one of the main sources of water pollution, and methyl orange (MO) is one of the most widely used organic dyes in the textile industry [21]. The discharge of large amounts of antibiotics and organic dyes causes water pollution and seriously threatens aquatic organisms and human society.…”

Section: Organohalidesmentioning

confidence: 99%

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Cerón-Urbano,

Aguilar,

Diosa

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

In this research work, the photocatalytic capacity shown by the nanoparticles of the CaTiO3 system was evaluated to degrade two pollutants of emerging concern, namely methyl orange (MO)—considered an organic contaminating substance of the textile industry that is non-biodegradable when dissolved in water—and levofloxacin (LVF), an antibiotic widely used in the treatment of infectious diseases that is released mostly to the environment in its original chemical form. The synthesis process used to obtain these powders was the polymeric precursor method (Pechini), at a temperature of 700 °C for 6 h. The characterization of the obtained oxide nanoparticles of interest revealed the presence of a majority perovskite-type phase with an orthorhombic Pbnm structure and a minority rutile-type TiO2 phase, with a P42/mnm structure and a primary particle size <100nm. The adsorption–desorption isotherms of the synthesized solids had H3-type hysteresis loops, characteristic of mesoporous solids, with a BET surface area of 10.01m2/g. The Raman and FTIR spectroscopy results made it possible to identify the characteristic vibrations of the synthesized system and the characteristic deformations of the perovskite structure, reiterating the results obtained from the XRD analysis. Furthermore, a bandgap energy of ~3.4eV and characteristic emissions in the violet (437 nm/2.8 eV) and orange (611 nm/2.03 eV) were determined for excitation lengths of 250 nm and 325 nm, respectively, showing that these systems have a strong emission in the visible light region and allowing their use in photocatalytic activity to be potentialized. The powders obtained were studied for their photocatalytic capacity to degrade methyl orange (MO) and levofloxacin (LVF), dissolved in water. To quantify the coloring concentration, UV–visible spectroscopy was used considering the variation in the intensity of the characteristic of the greatest absorption, which correlated with the change in the concentration of the contaminant in the solution. The results showed that after irradiation with ultraviolet light, the degradation of the contaminants MO and LVF was 79.4% and 98.1% with concentrations of 5 g/L and 10 g/L, respectively.

show abstract

Section: Organohalidesmentioning

confidence: 99%

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Cerón-Urbano,

Aguilar,

Diosa

et al. 2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…The applied pressure must be higher than the osmotic pressure exerted upstream of the membrane by the filtered solution to observe a permeate flow through the membrane. Applied pressures range from 20 to 80 bar [34][35].…”

Section: Implementation Of the Membranesmentioning

confidence: 99%

Monitoring and Evaluation of the Performance of Reverse Osmosis Membrane Systems for the Treatment of the Central Danone Plant

Toufik¹,

Karima²,

Imane³

et al. 2022

Int. J. Membrane Sci. Techno.

View full text Add to dashboard Cite

The objective of the present work is to monitor and control the physicochemical quality of the osmosis water that feeds the dairy industry in our case the Danone plant (DP) "Factory of Salé", for good production and use without no risk. The drilling water treatment and purification technique applied in the Danone plant is reverse osmosis. The approach of this membrane technique at a pressure gradient, allows obtaining good quality water for use in the various activities of the plant. During a 30-day period, we tested the pH, conductivity, alkalinity, hydrometric title, total alkalinity, chlorides content and chlorine content on water drawn from the borehole, the 1μ filter output, the treated output A and the treated water. The results of the experimental analyzes generally comply with the standards imposed within the plant, with the exception of a few days where cleaning of the membranes is necessary.

show abstract

“…It is inevitable to accept the associated advantage and disadvantages of available treatment techniques, such as physical methods such as adsorption and membrane separation, and chemical processes such as coagulation, chemical oxidation, Froth-flotation, oxidation, and solvent. [1][2][3] The adsorption method has received a lot of attention in scientific research because of its good environmental and economic benefits. [4][5][6] Tyrosine (Tyr) and phenylalanine (Phe) have benzene ring structure with weak polarity, and their adsorption on solid surfaces is increasingly studied, most of the current methods employed for the removal of AA from protein hydrolysates are based on the adsorption on activated carbon, polymeric resins, zeolites and ion exchangers.…”

Section: Introductionmentioning

confidence: 99%

“…In the traditional feather hydrolyzing amino acid industry, the cysteine, arginine and leucine are easily separated and purified to obtain a pure product, and other mixed amino acids are difficult to be utilized. It is inevitable to accept the associated advantage and disadvantages of available treatment techniques, such as physical methods such as adsorption and membrane separation, and chemical processes such as coagulation, chemical oxidation, Froth‐flotation, oxidation, and solvent 1–3 . The adsorption method has received a lot of attention in scientific research because of its good environmental and economic benefits 4–6 …”

Section: Introductionmentioning

confidence: 99%

Adsorption kinetics, isotherms and thermodynamics of aromatic amino acids in feather hydrolysate onto modified activated carbon

Wang,

Ding,

Zhang

et al. 2023

Env Prog and Sustain Energy

View full text Add to dashboard Cite

The main objective of this study was to produce low cost activated carbons for the adsorption of aromatic amino acids (AA) from feather hydrolysate. By optimizing the static adsorption conditions (time, pH and concentration) of amino acids, the adsorption amounts of tyrosine and phenylalanine reached 15.2 and 20.1 mg/g, respectively, under optimal conditions. Furthermore, it exhibits excellent reusability as it maintains a removal efficiency of 82.0% and 82.8% for tyrosine and phenylalanine after being reused 4 times. The effects of NaOH modified activated carbon (NA‐AC) on the adsorption capacity of AA in feather hydrolysate at different temperatures (298.15, 308.15, 318.15 K) were investigated, and the static adsorption kinetics curves were plotted. The adsorption isotherm (Langmuir, Freundlich model), kinetics (pseudo‐first‐order‐mode, pseudo‐second‐order‐mode, particle diffusion model) and thermodynamics were studied. The results shown that the adsorption process of AA onto NA‐AC accorded with the pseudo‐second‐order‐mode. The adsorption rate was mainly controlled by the liquid film diffusion and the particle diffusion. The adsorption isotherm accorded with the Langmuir adsorption isothermal model. Adsorption was an endothermic process, and increasing temperature was conducive to adsorption. Gibbs energy ΔG indicated that the adsorption process was spontaneous, and enthalpy △H indicated that the adsorption process was mainly physical adsorption. The proposed adsorption mechanisms provide a theoretical basis for the optimization of AA separation and purification process in feather hydrolysate by NA‐AC, which may further improve the separation and purification efficiency of other amino acids in feather hydrolysate.

show abstract

Zinc doping of different nanoparticles of TiO2 Sachtopore for improved elimination of the methyl orange by photocatalysis

Cited by 18 publications

References 63 publications

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Nanoparticles of the Perovskite-Structure CaTiO3 System: The Synthesis, Characterization, and Evaluation of Its Photocatalytic Capacity to Degrade Emerging Pollutants

Monitoring and Evaluation of the Performance of Reverse Osmosis Membrane Systems for the Treatment of the Central Danone Plant

Adsorption kinetics, isotherms and thermodynamics of aromatic amino acids in feather hydrolysate onto modified activated carbon

Contact Info

Product

Resources

About